D UCTED B LOWER S PLIT M DB 75-600 E R S ERIES Presentation.

DUCTED BLOWER SPLIT

MDB 75-600 ER SERIES

PresentationPresentation

OutlookOutlook

MDB75ER – MDB100ER

MDB 125/150 ERMDB 150 ER2

MDB 200/250/300 ER2

MDB 300/350/450 ER3

MDB 400/500/600 ER4

Exploded View Example, MDB125ERExploded View Example, MDB125ER

• Thermal Expansion Valve (TXV) for both indoor & outdoor unit.

• 2 TXV in a operation system

• Improve Expansion Efficiency

• Thermal Expansion Valve (TXV) for both indoor & outdoor unit.

• 2 TXV in a operation system

• Improve Expansion Efficiency

FeaturesFeatures

Refrigerant Circuit Example:Refrigerant Circuit Example:

FeaturesFeatures

• Flexibility in air supply

• Belt driven (Applicable for MDB125ER and above.

• Wider applications

• Taper lock Pulley

• Easy maintenance

• Flexibility in air supply

• Belt driven (Applicable for MDB125ER and above.

• Wider applications

• Taper lock Pulley

• Easy maintenance

FeaturesFeatures

• Air discharge orientation

• MDB 75-150 ER come with standard horizontal air discharge

• MDB 200-600 ER come with standard vertical air discharge, site convertible.

• Air discharge orientation

• MDB 75-150 ER come with standard horizontal air discharge

• MDB 200-600 ER come with standard vertical air discharge, site convertible.

FeaturesFeatures

Vertical Discharge

Horizontal Discharge

• Scroll Compressor

• Better energy efficiency

• Quieter in operation

• Scroll Compressor

• Better energy efficiency

• Quieter in operation

FeaturesFeatures

FeaturesFeatures

Plant Room Control Room

Indoor

Outdoor

Do you have this requirement?We provide the solution!

• Sequential Controller SQ1.0• Sequential Controller SQ1.0

FeaturesFeatures

• Package/ Components of Sequential Controller SQ1.0• Package/ Components of Sequential Controller SQ1.0

• Mainboard Configuration• Mainboard Configuration

• Display Panel Control Board (SQNDSP)• Display Panel Control Board (SQNDSP)

• Display Panel (SQNDSP)• Display Panel (SQNDSP)

• PAC LCD Wired Controller (SQNLCD)• PAC LCD Wired Controller (SQNLCD)

• Features• Features

Switch BoardMain PCB - inside DB unit

SQ LCD controller – Inside Control Room

(Optional)

Package/ Components of SQ Controller SQ1.0Package/ Components of SQ Controller SQ1.0

Max distance = 1km

Room Sensor ( x 1)Indoor Coil Sensor ( x 4)

1 x Indoor Fan

4 x Comp Relay 2 x Heater 4 x 4WV

Outdoor Coil Sensor4 x HP Switch

To Display Panel PCB

Mainboard ConfigurationMainboard Configuration

• Located in the switch board / plant room• Display Compressor Status & On/Off the system• Consists of connectors for live wire signal for:

- Compressor trip x 4- Compressor run x 4- CC heater x 4

Display Panel Control Board (SQNDSP)Display Panel Control Board (SQNDSP)

• Located On Switch Board• 4 LED for compressor status

Red - Trip Green - Run

• 4 LED for crankcase heater• On/Off Button to turn unit On/Off

Display Panel (SQNDSP)Display Panel (SQNDSP)

Located in the office/ central control room• Can be installed at 1 km away from main SQ1.0• Let user interface with the air conditioner• Display compressors ON/OFF, defrost status• Display error code to ease troubleshooting• 7 days, 24 hours real time timer• Battery operated

SQ LCD Wired Controller (SQNLCD)SQ LCD Wired Controller (SQNLCD)

DS1 DS2 DS5

1.Cooling(SQCn) off off off

2.Auto H/pump+no heater(SQHn0) on off on

3.Auto H/pump+1 heater(SQHn1) off on on

4.Auto H/pump+2 heater(SQHn2) on on on

Features of Sequential Controller SQ1.0Features of Sequential Controller SQ1.0

• Selection of Modes• Selection of Modes

• Sequential control & balance loading up to 4 compressors

• Applicable for MDB125ER2 to 600ER4

• Sequential control & balance loading up to 4 compressors

• Applicable for MDB125ER2 to 600ER4

% Capacity Loading % Capacity Loading % Capacity Loading

2 stages 3 stages 4 stages

2 Compressors 3 Compressors 4 Compressors


Heater 1

Heater 2

• Standby auxiliary heaters

• Auto random restart

• Unit automatically restarts as last setting condition when power is resumed after a breakdown

• Option is provided to cancel this feature

• Standby auxiliary heaters

• Auto random restart

• Unit automatically restarts as last setting condition when power is resumed after a breakdown

• Option is provided to cancel this feature


Selection can be done by setting dip switch 3 & 4

SW3(dip3) SW4(dip4)1. Default off off2. 0.5 0C on off3. 1.0 0C off on4. 1.5 0C on on

Where default differential temp. based on nos. of compressorsModel Default diff. Temp. setting1 compressor Not applicable2 compressors 0.5 0C3 compressors 1.0 0C4 compressors 1.5 0C

• Selectable stage differential temperature• Selectable stage differential temperature

Note : 1.5 0C only valid for 2 and 3 compressors model. For 4 compressors, max 1.0 0CNote : 1.5 0C only valid for 2 and 3 compressors model. For 4 compressors, max 1.0 0C


Troom °C

Ts+1.5

Ts+1.0

Ts+0.5

Ts

Ts-0.5

Ts-1.0

1 comp on

2 comp on

3 comp on

4 comp on

All comp off

3 comp off

2 comp off

1 comp off

0.5°C

a) 0.5°C differential temperature (Cooling cycle)


Troom °C

Ts+3.0

Ts+2.0

Ts+1.0

Ts

Ts-1.0

1 comp on

2 comp on

3 comp on

4 comp on

All comp off

3 comp off

2 comp off

1 comp off

1.0°C

b) 1.0°C differential temperature (Cooling cycle)


Ts+1.5

Ts+1.0

Ts+0.5

Ts

Ts-0.5

Ts-1.0

1 comp on

2 comp on3 comp on

4 comp on

4 comp off

3 comp off

2 comp off

1 comp off1.0°C

Troom °C

c) 0.5°C differential temperature (Heating cycle)


• COOL/ HEAT/ AUTO/ FAN system control

• Cold blast, spurt heat, hot start & hot keep

• Single fan Speed (High Speed)

• Set temperature in C or F

• Energy Saving Function

• Key lock function

• Test run function

• Unit will operate for 2 hours and stop if the “Test” button is pressed

• COOL/ HEAT/ AUTO/ FAN system control

• Cold blast, spurt heat, hot start & hot keep

• Single fan Speed (High Speed)

• Set temperature in C or F

• Energy Saving Function

• Key lock function

• Test run function

• Unit will operate for 2 hours and stop if the “Test” button is pressed


• Compressor protection

• Overload protection

• High/ low pressure protection

• Microprocessor control defrost cycle

• Antifreeze protection

• Error code indication

• E01 to E35 error code

• Compressor protection

• Overload protection

• High/ low pressure protection

• Microprocessor control defrost cycle

• Antifreeze protection

• Error code indication

• E01 to E35 error code


Error Possible Fault Error Possible Fault Code CodeE01 Req. manual reset E19 I/D coil sensor 4 shortE02 Comp. 1 h/temp.(O/L) E20 I/D coil sensor 1 openE03 Comp. 2 h/temp.(O/L) E21 I/D coil sensor 2 openE04 Comp. 3 h/temp.(O/L) E22 I/D coil sensor 3 openE05 Comp. 4 h/temp.(O/L) E23 I/D coil sensor 4 openE06 Comp. 1 h/pre trip E24 O/D coil sensor 1 shortE07 Comp. 2 h/pre trip E25 O/D coil sensor 2 shortE08 Comp. 3 h/pre trip E26 O/D coil sensor 3 shortE09 Comp. 4 h/pre trip E27 O/D coil sensor 4 shortE10 Comp. 1 L/pre trip E28 O/D coil sensor 1 openE11 Comp. 2 L/pre trip E28 O/D coil sensor 2 open E12 Comp. 3 L/pre trip E30 O/D coil sensor 3 openE13 Comp. 4 L/pre trip E31 O/D coil sensor 4 openE14 Room sensor short E32 Comp. 1 de-iceE15 Room sensor open E33 Comp. 2 de-iceE16 I/D coil sensor 1 short E34 Comp. 3 de-iceE17 I/D coil sensor 1 short E35 Comp. 4 de-iceE18 I/D coil sensor 1 short

Error Code Indication:Error Code Indication:


• NIM-Able

• Able to connect to Network Interface Module (NIM)

• Air conditioning systems can be controlled by single controller.

• NIM-Able

• Able to connect to Network Interface Module (NIM)

• Air conditioning systems can be controlled by single controller.


Date post:	26-Mar-2015
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D UCTED B LOWER S PLIT M DB 75-600 E R S ERIES Presentation.

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